/*
 * Copyright (c) 2011, Nikolaus Moll (developer (at) miblounge (dot) net).
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the Jombi project nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL JOMBI BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.miblounge.jombi.impl.widgets;

import org.jowidgets.spi.widgets.ITextAreaSpi;
import org.jowidgets.spi.widgets.setup.ITextAreaSetupSpi;

import com.trolltech.qt.core.Qt.ScrollBarPolicy;
import com.trolltech.qt.gui.QTextCursor;
import com.trolltech.qt.gui.QTextCursor.MoveMode;
import com.trolltech.qt.gui.QTextEdit;
import com.trolltech.qt.gui.QTextEdit.LineWrapMode;
import com.trolltech.qt.gui.QWidget;

public class TextAreaImpl extends AbstractTextInputControl implements ITextAreaSpi {

	public TextAreaImpl(final Object parentUiReference, final ITextAreaSetupSpi setup) {
		super(new QTextEdit((QWidget) parentUiReference));

		getUiReference().setLineWrapMode(convert(setup.isLineWrap()));

		//textArea.setAutoscrolls(false);

		if (setup.isAlwaysShowBars()) {
			getUiReference().setVerticalScrollBarPolicy(ScrollBarPolicy.ScrollBarAlwaysOn);
			if (!setup.isLineWrap()) {
				getUiReference().setHorizontalScrollBarPolicy(ScrollBarPolicy.ScrollBarAlwaysOn);
			}
		}

		registerTextComponent(getUiReference());
	}

	private static LineWrapMode convert(final boolean isLineWrap) {
		if (isLineWrap) {
			return LineWrapMode.WidgetWidth;
		} else {
			return LineWrapMode.NoWrap;
		}
	}

	@Override
	public QTextEdit getUiReference() {
		return (QTextEdit) super.getUiReference();
	}

	@Override
	public String getText() {
		return getUiReference().toPlainText();
	}

	@Override
	public void setText(final String text) {
		getUiReference().setText(text);

		setCaretPosition(text.length() / 2);
	}

	@Override
	public void setToolTipText(final String toolTip) {
		getUiReference().setToolTip(toolTip);
	}

	@Override
	public void setSelection(final int start, final int end) {
		// TODO NM test

		final QTextCursor selection = getUiReference().textCursor();
		selection.setPosition(start, MoveMode.MoveAnchor);
		selection.setPosition(end, MoveMode.KeepAnchor);
		getUiReference().setTextCursor(selection);
	}

	@Override
	public void setEditable(final boolean editable) {
		getUiReference().setReadOnly(!editable);
	}

	@Override
	public void scrollToCaretPosition() {
		getUiReference().ensureCursorVisible();
	}

	@Override
	public void setCaretPosition(final int pos) {
		final QTextCursor textCursor = getUiReference().textCursor();
		textCursor.setPosition(pos);
		getUiReference().setTextCursor(textCursor);
	}

	@Override
	public int getCaretPosition() {
		return getUiReference().textCursor().position();
	}

	@Override
	protected void fireInputChanged() {
		fireInputChanged(getUiReference().toPlainText());
	}

}
